Study of electrostatic phenomenon in gas-solid processes

在颗粒搬运、运输和加工过程中，由于颗粒与颗粒、流体与颗粒、颗粒与壁面的接触，通过摩擦带电、摩擦带电和接触带电等方式产生静电。电荷的积聚会导致颗粒团聚、颗粒壁粘连和高压电场的产生，这可能会导致爆炸，因此是一种重大危险。聚合物工业中的气固流态化反应器、石油和天然气工业中的催化裂化装置以及药品中的压片和包埋等气固过程为静电现象的发生提供了理想的环境。本研究计划将通过开发新的测量技术、研究主要的电荷产生机制和确定电荷产生的控制策略，来帮助更好地了解上述行业的静电电荷产生。

Electrostatic charges are generated during particle handling, transport, and processing due to particle-particle, fluid-particle and particle-wall contacts by frictional charging, tribo-electrification and contact charging. The charge build-up results in particle agglomeration, particle-wall adhesion and generation of high-voltage electrical fields, which can cause explosions and therefore be a major hazard. Gas-solid processes such as gas-solid fluidized bed reactors in polymer industries, fluid catalytic crackers in oil and gas industries and tabletting and encapsulation in pharmaceuticals provide ideal environment for electrostatic phenomenon to occur. This research program will attempt to help to gain a better understanding of electrostatic charge generation in mentioned industries by developing a new measurement technique, studying the dominating charge generation mechanisms and determining charge generation control strategies.